Pendulum swinging upward in an arc
A 23 rifle bullet traveling 290 buries itself in a 3.3 pendulum hanging on a 3.0 long string, which makes the pendulum swing upward in an arc.
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A flat (unbanked) curve on a highway has a radius of 200 m. A car rounds the curve at a speed of 18.0 m/s. What is the minimum coefficient of friction that will prevent sliding?
After a 0.200-kg rubber ball is dropped from a height of 1.90 m, it bounces off a concrete floor and rebounds to a height of 1.45 m. a) Determine the magnitude and direction of the impulse delivered to the ball by the floor.
Supporting his theory, since 2001, workers in the United States have increased their hours worked while tax rates have dropped. What theory or theories of motivation might explain such a change?
What is the final equilibrium temperature when 28 g of milk at 12?C is added to 140 g of coffee at 65?C? Assume the specific heats of milk and coffee are the same as that of water, and neglect the specific heat of the container.
While standing at a crosswalk, you hear a frequency of 560 Hz from an approaching police car. After the police car passes, its frequency is 480 Hz. What is the speed of the police car? (speed of sound = 340 m/s)
A 0.300-kg mass, attached to the end of a 0.750-m string, is whirled around in a smooth level table. If the maximum tension that the string can withstand is 250 N, then what maximum linear speed can the mass have if the string is not to break?
You are driving a 3000 kg car at a constant speed 20 m/s along an icy road. While approaching a traffic light, it turn red. You slam on the brakes and come to a complete stop. The skid marks are 20 m long. What is the force of friction between the
If the create has a mass of 60 and is 1.6 tall and 0.80 in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to prevent slip
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